Disk anti-copying system, method and apparatus

Abstract

Cryptographic anti copying mechanism builds a set of cipher key series table on device and prerecorded cipher key on media of multiple blocks through fixing up cipher. Thus, it is impossible to read disk by a device correctly without using the fixing up deciphering program so as to reach the purpose of controlling device and stopping illegal copying. The invention also puts forward method for anti copying disk and device capable of anti copying disk.

Description

technical field [0001] The present invention relates to a key management system (Key Management System), in particular to a device applied between a digital device and a digital recording medium, using a device key table (Device Key Table, Kd Table) prefabricated in the device , and pre-recorded in the disc Media Key Block (Media KeyBlock, MKB) to perform fixed encryption and decryption procedures to achieve a disc copy protection system. Background technique [0002] With the continuous vigorous progress of computer software and hardware technology and digital multimedia applications, the development of digital data storage technology has gradually been paid attention to. However, due to the easy copying of digital data, digital data stored on recording media Data protection is no longer as easy as traditional works, so related intellectual property issues have also attracted much attention. In order to ensure the privacy and security of digital data, there are more and mor...

AI Technical Summary

Problems solved by technology

However, the current methods of both have the same problem of Key-Meet-in-the-Middle, so as long as it takes time, it can be easily cracked by interested people.

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